Originally Posted by
jrickards
What pumps would you use (on the road, not at home/in the shop) to inflate a fat tire? Even a full-length frame-style pump would likely require a fair bit of pumping.
I use a standard floor pump for the fat tires and carry a Serfas compact pump. I have never tried pumping the tires with the hand pump. However, I will tell you with the floor pump, ~10 strokes gets you 1 to 2 psi. Since the tires are high volume and low pressure, it's honestly not too different from a high pressure, low volume tire.
Originally Posted by
FrozenK
While Hypno Toad's average speed/pressure numbers are interesting, it is hard to draw conclusions because conditions have a huge impact on rolling resistance. I can tell you that on his ride at -10F rolling resistance was way higher than it would be on a ride at 20F. It takes a lot more effort the colder it gets. Tires get stiffer, you have more clothes on, snow gets grippier... and it just takes a toll on you.
I totally agree and that's why I added temps, it make an amazing difference riding in the cold... I don't have a great way to compare pressure versus speed at the same temp. But clearly, lower pressure equals more work and slower speeds. Shocking, I know
Take this for example, two rides over the same route:
-10F, 25 miles, average pace
9.4 mph with Strava Suffer Score of
134
45F, 28 miles, average pace
14.6 mph with Strava Suffer Score of
56
I know that my tires were higher pressure on the 45F ride (no snow or ice) but I don't know what the pressure was at, likely 12 psi since that's my typical 'summer' pressure. Regardless, the level of work (Suffer Score) and the average pace, people get a great idea how much more work it is to ride in the cold.